Free form

coding form

chrome free and formaldehyde free tannage

lead free and cadmium free

represeuting a complete form sence f rom one thousaud Chinese feet and a detail form from one hundred Chinese feet

Reed Solomon coding and convolutional coding

Free rider psychology

(Pb)lead-free

．OH free radical

·OH free radical

100m free style

1150mm free standing last-stage steel blades

1-Diphenyl-2-picrylhydrazyl DPPH free radical

2-D free shear turbulent flows

2-torsion-free

3-D free curved surface

3-D free shear layer

3D free surface

3-free

6-tetramethyl-1-piperidinyloxy free radical